package com.wpq.netty.sdk;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;

public class SimpleChatServer {
    private int port;
    public SimpleChatServer(int port){
        this.port=port;
    }
    public void run() throws Exception {
        EventLoopGroup bossGroup=new NioEventLoopGroup();
        EventLoopGroup workerGroup=new NioEventLoopGroup();
        try {
            ServerBootstrap b=new ServerBootstrap();
            b.group(bossGroup,workerGroup)
                    .channel(NioServerSocketChannel.class)
                    .childHandler(new SimpleChatServerInitializer())
                    //提供给NioServerSocketChannel 用来接收进来的连接
                    .option(ChannelOption.SO_BACKLOG,128)
                    //提供给NioServerSocketChannel 用来接收进来的连接
                    .childOption(ChannelOption.SO_KEEPALIVE,true);
            System.out.println("simpleChatServer 启动了");
            //绑定端口，开始接收进来的连接
            ChannelFuture f=b.bind(port).sync();
            f.channel().closeFuture().sync();
        }finally {
            workerGroup.shutdownGracefully();
            bossGroup.shutdownGracefully();
            System.out.println("simpleChatServer 关闭了");
        }
    }

    public static void main(String[] args) throws Exception{
        int port;
        if(args.length>0){
            port=Integer.parseInt(args[0]);
        }else{
            port=8090;
        }
       new SimpleChatServer(port).run();
    }

}
